• Register Today It's free! This box and some ads will disappear once registered!

^^Searches ExplorerForum.com^^

Questions regarding heater hoses.

Joined
April 29, 2017
Messages
54
Reaction score
1
City, State
Marietta, GA
Year, Model & Trim Level
1998 Explorer Eddie Bauer
I have a couple of questions.

1. Which of the two hoses is the heater inlet hose? I am installing a prestone back-flush tee, and it needs to be on the inlet hose.

2. My heater control valve is not where I have seen in before on other similar vehicles (near the firewall). It is down close to the water pump. Is this the proper place for this valve?
 


Join the Elite Explorers for $20 per year. Gets rid of the ads! New $5 per month "try out" option.

Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose fix problems yourself and learn which modifications work without having to experiment on your own. Elite Explorer members see no advertisements, no banner ads, no double underlined links, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create and save more private Conversations, and more. Join Today. Your support is greatly appreciated.




974X4BLACKSPORT

Active Member
Joined
May 21, 2018
Messages
955
Reaction score
219
Location
FL
City, State
hudson
Year, Model & Trim Level
BLACK 1997 SPORT 4 BY 4
The water control valve as it is called in the workshop manual. The top hose going to the front of the vehicle goes to the water pump (cold), and the bottom hose goes to the intake manifold (hot).
From the heater core outlet, the right hose goes to the top of the valve, and the left hose goes to the bottom .

The water control valve sits up by the firewall.

As far as flushing the heater core, I would flush both direction real good, take both hoses off the water control valve and run a length of hose off the heater core down to a pail, in one hose, out the other, and vise versa.
 




XLTrunner

Active Member
Joined
April 19, 2015
Messages
856
Reaction score
130
City, State
MN
Year, Model & Trim Level
1998 Explorer XLT 4.0SOHC
Ummm...on the 1998 SOHC engine, the water control valve is indeed located down low on the passenger side near the water pump. Most easily seen/accessed by removing the alternator & alternator mtg bracket.
 




J_C

Well-Known Member
Joined
July 30, 2009
Messages
3,270
Reaction score
449
City, State
Florence, KY
Year, Model & Trim Level
1998 XLT 4WD 4.0L SOHC
It might help if Georgia mentioned which engine this is. Being an Eddie Bauer, I'd guess 5.0L V8.
 




Joined
April 29, 2017
Messages
54
Reaction score
1
City, State
Marietta, GA
Year, Model & Trim Level
1998 Explorer Eddie Bauer
Ummm...on the 1998 SOHC engine, the water control valve is indeed located down low on the passenger side near the water pump. Most easily seen/accessed by removing the alternator & alternator mtg bracket.

If this is the case, then it is in the heater return hose. Isn't it unusual for the control valve to be in the return hose?
 








Joined
April 29, 2017
Messages
54
Reaction score
1
City, State
Marietta, GA
Year, Model & Trim Level
1998 Explorer Eddie Bauer
I put in the T-adapter. From the pics, can you tell if it is in the right place?

DSCF1186.JPG
 




XLTrunner

Active Member
Joined
April 19, 2015
Messages
856
Reaction score
130
City, State
MN
Year, Model & Trim Level
1998 Explorer XLT 4.0SOHC
i'd say you're good to go!
 




Top